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LSST Data Management Base Package
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GaussianPsf.h
Go to the documentation of this file.
1// -*- LSST-C++ -*-
2/*
3 * LSST Data Management System
4 * Copyright 2008-2014 LSST Corporation.
5 *
6 * This product includes software developed by the
7 * LSST Project (http://www.lsst.org/).
8 *
9 * This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the LSST License Statement and
20 * the GNU General Public License along with this program. If not,
21 * see <http://www.lsstcorp.org/LegalNotices/>.
22 */
23#ifndef LSST_AFW_DETECTION_GaussianPsf_h_INCLUDED
24#define LSST_AFW_DETECTION_GaussianPsf_h_INCLUDED
25
26#include "lsst/geom.h"
28
29namespace lsst {
30namespace afw {
31namespace detection {
32
42class GaussianPsf : public afw::table::io::PersistableFacade<GaussianPsf>, public Psf {
43public:
51 GaussianPsf(int width, int height, double sigma);
52
59 GaussianPsf(lsst::geom::Extent2I const& dimensions, double sigma);
60
61 ~GaussianPsf() override;
66
69
71 std::shared_ptr<afw::detection::Psf> resized(int width, int height) const override;
72
74 lsst::geom::Extent2I getDimensions() const { return _dimensions; }
75
77 double getSigma() const { return _sigma; }
78
80 bool isPersistable() const noexcept override { return true; }
81
82protected:
83 std::string getPersistenceName() const override;
84
85 std::string getPythonModule() const override;
86
87 void write(OutputArchiveHandle& handle) const override;
88
89private:
90#if 0 // We could reimplement this more efficiently than what's in the base class,
91 // but it's tricky to get the position right in all corner cases, and it's
92 // not actually performance-critical, so we should just wait for #3116.
94 lsst::geom::Point2D const & position, image::Color const& color
95 ) const;
96#endif
97
99 image::Color const& color) const override;
100
101 double doComputeApertureFlux(double radius, lsst::geom::Point2D const& position,
102 image::Color const& color) const override;
103
104 geom::ellipses::Quadrupole doComputeShape(lsst::geom::Point2D const& position,
105 image::Color const& color) const override;
106
108 image::Color const& color) const override;
109
110 lsst::geom::Extent2I _dimensions;
111 double _sigma;
112};
113} // namespace detection
114} // namespace afw
115} // namespace lsst
116
117#endif // !LSST_AFW_DETECTION_Psf_h_INCLUDED
std::shared_ptr< afw::detection::Psf > resized(int width, int height) const override
Return a clone with specified kernel dimensions.
std::string getPersistenceName() const override
Return the unique name used to persist this object and look up its factory.
geom::ellipses::Quadrupole doComputeShape(lsst::geom::Point2D const &position, image::Color const &color) const override
double getSigma() const
Return the radius of the Gaussian.
Definition GaussianPsf.h:77
void write(OutputArchiveHandle &handle) const override
Write the object to one or more catalogs.
std::string getPythonModule() const override
Return the fully-qualified Python module that should be imported to guarantee that its factory is reg...
double doComputeApertureFlux(double radius, lsst::geom::Point2D const &position, image::Color const &color) const override
bool isPersistable() const noexcept override
Whether the Psf is persistable; always true.
Definition GaussianPsf.h:80
std::shared_ptr< Image > doComputeKernelImage(lsst::geom::Point2D const &position, image::Color const &color) const override
These virtual member functions are private, not protected, because we only want derived classes to im...
lsst::geom::Extent2I getDimensions() const
Return the dimensions of the images returned by computeImage()
Definition GaussianPsf.h:74
lsst::geom::Box2I doComputeBBox(lsst::geom::Point2D const &position, image::Color const &color) const override
GaussianPsf(GaussianPsf const &)
GaussianPsf & operator=(GaussianPsf const &)=delete
std::shared_ptr< afw::detection::Psf > clone() const override
Polymorphic deep copy; should usually be unnecessary because Psfs are immutable.
GaussianPsf & operator=(GaussianPsf &&)=delete
GaussianPsf(int width, int height, double sigma)
Constructor for a GaussianPsf.
virtual std::shared_ptr< Image > doComputeImage(lsst::geom::Point2D const &position, image::Color const &color) const
These virtual members are protected (rather than private) so that python-implemented derived classes ...
Definition Psf.cc:177
Psf(Psf const &)
Definition Psf.cc:78
Describe the colour of a source.
Definition Color.h:23
A CRTP facade class for subclasses of Persistable.
io::OutputArchiveHandle OutputArchiveHandle
An integer coordinate rectangle.
Definition Box.h:55
Point< double, 2 > Point2D
Definition Point.h:324
Extent< int, 2 > Extent2I
Definition Extent.h:397